<abstract xmlns="http://www.w3.org/1999/xhtml">Postharvest senescence is a critical problem of carnation cut flowers, limiting their transportation and subsequent marketing chain. This study was designed to assess whether the application of 1-methylcyclopropene (1-MCP), silver nanoparticles (AgNPs), and nitric oxide (NO) released from donor sodium nitroprusside (SNP) could prolong the vase life of cut carnations through an influence on the physiological and biochemical mechanisms involved in aging process. 1-MCP was used in the concentrations of 0, 100, 200, and 300 mg·m−3; AgNPs in the concentrations of 0, 50, 100, and 150 mg·dm−3; and SNP in the concentrations of 0, 0.1, 0.2, 0.3, and 0.4 mM. All treatments significantly extended the cut flower life compared with untreated flowers, more so with 300 mg·m−3 of 1-MCP, 100 mg·dm−3 of AgNPs, or 0.3 mM of SNP. All these chemical compounds were able to considerably improve the relative water content (RWC), reduce the malondialdehyde (MDA) content and increase the membrane stability index (MSI) in petals and, therefore, maintain the membrane integrity. In addition, they decreased the activities of acetyl-CoA synthetase (ACS) and nitric oxide synthase (NOS) and, hence, depressed the production of ethylene in carnation cut flowers through downregulating the ethylene production, what prolonged the vase life. Altogether, the application of exogenous 1-MCP, AgNPs, or SNP may provide a promising avenue to improve the postharvest performance of carnation cut flowers.</abstract>

Postharvest senescence is a critical problem of carnation cut flowers, limiting their transportation and subsequent marketing chain. This study was designed to assess whether the application of 1-methylcyclopropene (1-MCP), silver nanoparticles (AgNPs), and nitric oxide (NO) released from donor sodium nitroprusside (SNP) could prolong the vase life of cut carnations through an influence on the physiological and biochemical mechanisms involved in aging process. 1-MCP was used in the concentrations of 0, 100, 200, and 300 mg·m−3; AgNPs in the concentrations of 0, 50, 100, and 150 mg·dm−3; and SNP in the concentrations of 0, 0.1, 0.2, 0.3, and 0.4 mM. All treatments significantly extended the cut flower life compared with untreated flowers, more so with 300 mg·m−3 of 1-MCP, 100 mg·dm−3 of AgNPs, or 0.3 mM of SNP. All these chemical compounds were able to considerably improve the relative water content (RWC), reduce the malondialdehyde (MDA) content and increase the membrane stability index (MSI) in petals and, therefore, maintain the membrane integrity. In addition, they decreased the activities of acetyl-CoA synthetase (ACS) and nitric oxide synthase (NOS) and, hence, depressed the production of ethylene in carnation cut flowers through downregulating the ethylene production, what prolonged the vase life. Altogether, the application of exogenous 1-MCP, AgNPs, or SNP may provide a promising avenue to improve the postharvest performance of carnation cut flowers.

Involvement of Ethylene Synthetic Inhibitors in Regulating the Senescence of Cut Carnations through Membrane Integrity Maintenance

Horticulture Department, Faculty of Agriculture

Journal of Horticultural Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Postharvest senescence is a critical problem of carnation cut flowers, limiting their transportation and subsequent marketing chain. This study was designed to...

Involvement of Ethylene Synthetic Inhibitors in Regulating the Senescence of Cut Carnations through Membrane Integrity Maintenance

Publicado en línea: 30 jun 2020

Páginas: 39 - 48

Recibido: 01 ene 2020

Aceptado: 01 may 2020

DOI: https://doi.org/10.2478/johr-2020-0010

Palabras clave
Flower senescence, ethylene, vase life, membrane stability, ACS synthase

© 2020 Fahmy Hassan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Involvement of Ethylene Synthetic Inhibitors in Regulating the Senescence of Cut Carnations through Membrane Integrity Maintenance

Publicado en línea: 30 jun 2020

Páginas: 39 - 48

Recibido: 01 ene 2020

Aceptado: 01 may 2020

DOI: https://doi.org/10.2478/johr-2020-0010

Palabras claveFlower senescence, ethylene, vase life, membrane stability, ACS synthase

© 2020 Fahmy Hassan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Palabras clave
Flower senescence, ethylene, vase life, membrane stability, ACS synthase